Method and system for monitoring real-time bearing capacity limit of foundation pit

Abstract

The invention discloses a method for monitoring the real-time bearing capacity limit of a foundation pit. The method comprises the steps of (1) detecting and surveying the site environment, landform,site structure and historical condition; (2) determining a monitoring scheme according to the detection result, wherein the monitoring scheme involves mechanical performance indexes, the number of monitoring points, the arrangement position and frequency; (3) establishing a monitoring mathematical model; (4) arranging sensors at the monitoring points, collecting monitoring data, and uploading themonitoring data to a cloud server; (5) receiving and storing the monitoring data through the cloud server, and analyzing the monitoring data in real time in combination with the monitoring mathematical model to obtain the real-time safety coefficient FOSins; (6) and sending early-warning signals at different levels to a monitoring terminal according to the magnitude of the real-time safety coefficient FOSins. The invention furthermore discloses a system for monitoring the real-time bearing capacity limit of the foundation pit. According to the method and system for monitoring the real-time bearing capacity limit of the foundation pit, the material characteristics and the actual mechanical stability of the site are taken into account, a cloud server technology is furthermore utilized to evaluate the real-time safety level of the site at any time, the time is gained for people to safely leave the site, and the property loss of people is avoided.

Description

technical field [0001] The invention relates to the technical field of geotechnical and structural engineering, in particular to a method and system for monitoring the limit of the real-time bearing capacity of a foundation pit. Background technique [0002] The existing monitoring method for foundation pit is to adopt the serviceable limit state (SLS) monitoring method, and this SLS monitoring method has been widely used in geotechnical and structural engineering. Deformation, inclination, settlement, displacement, etc. are key monitoring parameters in different national codes (Technical Code for Building Slope Engineering in China GB50330-2013, Chinese Code for Deformation Measurement of Buildings JGJ8-2016 and related British codes and American codes). In general, the parameter limits of these SLS monitoring methods are based on engineering experience or rules of thumb. In addition, these limit values ​​vary in different national and regional practices. Also, the SLS mo...

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Problems solved by technology

[0004] (2) The limit values ​​of SLS monitoring parameters are defined based on engineering experience or rules of thumb, and these limit values ​​cannot reflect the stress state of the structure;

[0005] (3) The characteristics of materials are not considered in the SLS monitoring method

[0006] This shows that above-mentioned existing a kind of SLS monitoring method still has inconvenience and defect, and urgently needs to be further improved

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